TM 9-2320-365-10WARNINGWheels must be chocked andservice brakes applied beforeparking brake is released.Vehicle may roll if wheels arenot chocked. Failure to complymay result in serious injury ordeath to personnel.(5) Install two wheel chocks (4) against tireacross from tire (5) that is to be inflated.NOTE Air is available at reargladhands as long as brakepedal is applied. Steps (6) through (14) requirethe aid of an assistant.(6) Depress brake pedal (6).(7) Push in SYSTEM PARK control (7).(8) Push in TRAILER AIR SUPPLY control(8).3-89